Efficient development and Characterisation of Asp-AuNPs based colorimetric sensor for the detection of Ag(I) from real water samples. Issue 16 (16th December 2022)

• Record Type: Journal Article
• Authors: Memon, Safia Sanam; Sirajuddin, ; Memon, Shahabuddin; Kumar, Ameet; Memon, Nusrat Shahab
• Is Part Of: International journal of environmental analytical chemistry. Volume 102:Issue 16(2022)
• Page Start: 4440
• Page End: 4450
• Publication Date: 2022-12-16
• Subjects: Silver ions -- nanotechnology -- gold nanoparticles -- aspirin -- colorimetric sensor; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2020.1784415
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: In this work, we develop an effective and efficient method for the preparation of gold nanoparticles (AuNPs). In this method, we used acetylsalicylic acid named aspirin (Asp) as a reducing agent. However, there is no need for any stabiliser to stabilise the reaction. The prepared nanoparticles were characterised by using FT-IR, UV-Visible, AFM, and XRD. These Asp-AuNPs nanoparticles were applied for the sensitive and selective determination of silver ions (Ag + ). The estimated average size of gold nanoparticles was 33 nm. The sensor responds in the linear range of 0.002–0.015 µM. The sensor response towards other metals i.e. Li +, Cu 2+, Ni 2+, Co 2+, Pb 2+, Zn 2+, Fe 2+, Cr 3+ and As 3+ was obtained negligible. The limit of detection (LOD) of the prepared sensor was found up to 0.046 nM. The prepared colorimetric sensor was effectively applied to determine Ag + ions in real water samples obtained from jewellery shops from different places of Hyderabad, Sindh Pakistan.